small fixes

frontend/src/App.tsx

@@ -229,7 +229,7 @@ export function App() {
                                             <ProgressBar className="container-padding mt-2" now={progressMap.get(message[0])} variant="primary" /> :
                                             null
                                         }
-                                        {message[1] && message[1] !== 'Done!' ?
+                                        {message[0] && message[1] && message[1] !== 'Done!' ?
                                             <Row>
                                                 <Col>
                                                     <Button variant={darkMode ? 'dark' : 'light'} className="float-end" active size="sm" onClick={() => abort(message[0])}>

frontend/src/utils.ts

@@ -10,7 +10,7 @@ export function validateDomain(domainName: string): boolean {
 
 export function ellipsis(str: string, lim: number): string {
     if (str) {
-        return str.length > lim ? `${str.substr(0, lim)}...` : str
+        return str.length > lim ? `${str.substring(0, lim)}...` : str
     }
     return ''
 }